ഒരു ക്ലാസിലെ 25 കുട്ടികളുടെ ശരാശരി വയസ്സ് 14, ഒരു കുട്ടി കൂടി പുതുതായി വന്നപ്പോൾ ശരാശരി 14.5 ആയാൽ പുതുതായി വന്ന കുട്ടിയുടെ പ്രായം എത്
A16
B27
C18
D21
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Related Questions:
Average age of 8 men is increased by 3 years when two of them whose ages are 30 and 34 years are replaced by 2 persons. What Is the average age of the 2 persons?
Average weight of 8 members of a group is 37. it is found that the weight of one person is wrongly marked as 63 instead of 31 find the original average of the group ?
A group of people contains men, women and children. If 40% of them are men, 35% are women and rest are children, and their average weights are 70 kg, 60 kg and 30 kg, respectively. The average weight of the group is:
There are 3 students in a group. If the weight of any student is added to the average weight of the other two the sums received are 48 kg, 52 kg, and 59 kg. The average weight (in kg) of the three students is:
If the mean of the observations x, x + 4, x + 5, x + 7, x + 9 is 9, then the mean of the last three observations is: